<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>

      <el-table :data="rolelist" style="width: 100%" stripe>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom',i1===0? 'bdtop':'','vcenter']"
              v-for="(item1,i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 一级 -->
              <el-col :span="5">
                <el-tag
                  hit
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                >{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 二级 -->
              <el-col :span="19">
                <el-row
                  :class="[i2===0? '':'bdtop','vcenter']"
                  v-for="(item2,i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      hit
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 三级 -->
                  <el-col :span="18">
                    <!-- scope.row 当前的这个对象   传入的这个参数在下面方法中通过role来接受的-->
                    <el-tag
                      @close="removeRightById(scope.row, item3.id)"
                      type="warning"
                      v-for="(item3,i3) in item2.children"
                      :key="item3.id"
                      hit
                      closable
                    >{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>

            <!-- <pre>

                {{scope.row}}
            </pre>-->
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="roleName" label="角色描述"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <el-dialog title="提示" :visible.sync="showSetRightDia" width="50%" @close="setRightDialogClosed" >
     <el-tree ref='treeRef' :data="rightslist" :default-checked-keys="defKeys" :props="treeProps" show-checkbox default-expand-all node-key='id' ></el-tree>
      <span slot="footer" >
        <el-button @click='showSetRightDia=false'>取 消</el-button>
        <el-button type="primary"   @click='allotRights'>确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      rolelist: [],
      rightslist: [],
        // 当前即将分配权限的角色id
      roleId: '',
      showSetRightDia:false,
      treeProps:{
        children:'children',
        label:'authName'

      },defKeys:[105,116],
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");

      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败！");
      }

      this.rolelist = res.data;

      ///  console.log(this.rolelist);
    },
    // 根据Id删除对应的权限
    // 这里通过role这个参数来接受上面scope.row
    async removeRightById(role, rightId) {
      // 弹框提示用户是否要删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);

      if (confirmResult !== "confirm") {
        return this.$message.info("取消了删除！");
      }

      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );

      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败！");
      }

      // this.getRolesList()
      //在函数内部修改,函数外部也能受到影响
      role.children = res.data;
    //  console.log(res.data);

      this.$message.success("删除权限成功！");
    },
  async  showSetRightDialog(role) {
    const{data:res} =await this.$http.get('rights/tree')
    if(res.meta.status!==200){
      return this.$message.error('获取失败')
    }
    this.rightslist=res.data
   // console.log(this.rightslist);
 //   console.log(role);
      this.roleId = role.id
    
this.getLeafKeys(role, this.defKeys)
      this.showSetRightDia=!this.showSetRightDia
      

    },
    // 通过递归的形式，获取角色下所有三级权限的id，并保存到 defKeys 数组中
    getLeafKeys(node, arr) {
      // 如果当前 node 节点不包含 children 属性，则是三级节点
      if (!node.children) {
        return arr.push(node.id)
      }

      node.children.forEach(item => this.getLeafKeys(item, arr))
    },    
    setRightDialogClosed() {
      this.defKeys = []
    },
     // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]

      const idStr = keys.join(',')

      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }

      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
};
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>